Watson described the purpose of psychology as: âTo predict, given the stimulus, what reaction will take place; or, given the reaction, state what the situation or stimulus is that has caused the reactionâ (1930, p. 11). * All behavior is learnt from the environment.
Additional tests including penetration,solubility, and ductility are made on the residue. Cutback asphalt grades and tests There are several grades for each of the three types ofcutbacks â rapid curing (RC), medium curing (MC), andslow curing, (SC). The grades include 70, 250, 800, and3000.
Asphalt is only as good as what is underneath it! The asphalt when rolled should be 2.5 inches thick. Commercial Parking Lots - Parking lots and subdivision roads should have a minimum 6 inch gravel base due to heavy traffic & large machinery that will drive on it. The asphalt should be placed in 2 layers at 1.5 inches of asphalt per layer (referred to as 2 course) resulting in 3 inch thick asphalt. Asphalt is placed in 2 layers for this type of project for better compaction. Commercial jobs vary depending on what is required by management, state, etc.